Brad is testing three solutions with litmus paper. after dipping the litmus paper strips in the solutions, he observes two papers turning blue and one turning red. out of the three solutions, how many are acidic

A blue litmus paper becomes red when immersed in acidic solutions while a red litmus paper retains its color. Only one solution in the experiment is acidic since one litmus paper turned red after it was dipped in a solution.

The soviet union beat the us to the first successful launch, with the october 4, 1957, orbiting of sputnik 1, and later beat the us to have the first human in earth orbit, yuri gagarin, on april 12, 1961. the "race" peaked with the july 20, 1969, us landing of the first humans on the moon with apollo 11